General

  • Target

    overwriteb.exe

  • Size

    1.2MB

  • Sample

    240810-v6ceqszdnm

  • MD5

    ca5c20231b040ba62a2298d550ff29df

  • SHA1

    b7b70a16b1d34c5a62a88749ec8e59d3f6555aab

  • SHA256

    4229338a94ac0e1777f2ad1e66b05829eda51d008f5a1a43105f5751510c2d47

  • SHA512

    eebe27ecbc693c307ea84c8d7ed17898f7d28332b733dfc61e717fc64e4f836ca86fb9be33012c926f6fdccd8ac184b322af966ad1d42e18ca388229d5986be2

  • SSDEEP

    12288:T355796MTqnYI6SZ7kUXYXVeCHkAVz5CntHsh9Z+DX87Kf+iXhhnCkAclR1hyxVw:X96MTqnYI6SZ7kU0VuMKf7nCkAMN

Malware Config

Targets

    • Target

      overwriteb.exe

    • Size

      1.2MB

    • MD5

      ca5c20231b040ba62a2298d550ff29df

    • SHA1

      b7b70a16b1d34c5a62a88749ec8e59d3f6555aab

    • SHA256

      4229338a94ac0e1777f2ad1e66b05829eda51d008f5a1a43105f5751510c2d47

    • SHA512

      eebe27ecbc693c307ea84c8d7ed17898f7d28332b733dfc61e717fc64e4f836ca86fb9be33012c926f6fdccd8ac184b322af966ad1d42e18ca388229d5986be2

    • SSDEEP

      12288:T355796MTqnYI6SZ7kUXYXVeCHkAVz5CntHsh9Z+DX87Kf+iXhhnCkAclR1hyxVw:X96MTqnYI6SZ7kU0VuMKf7nCkAMN

    • Possible privilege escalation attempt

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Modifies file permissions

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

MITRE ATT&CK Enterprise v15

Tasks